diff options
Diffstat (limited to 'arch/avr32/mm/init.c')
| -rw-r--r-- | arch/avr32/mm/init.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/arch/avr32/mm/init.c b/arch/avr32/mm/init.c deleted file mode 100644 index def5391d927a..000000000000 --- a/arch/avr32/mm/init.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Copyright (C) 2004-2006 Atmel Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/gfp.h> -#include <linux/mm.h> -#include <linux/swap.h> -#include <linux/init.h> -#include <linux/mmzone.h> -#include <linux/module.h> -#include <linux/bootmem.h> -#include <linux/pagemap.h> -#include <linux/nodemask.h> - -#include <asm/page.h> -#include <asm/mmu_context.h> -#include <asm/tlb.h> -#include <asm/io.h> -#include <asm/dma.h> -#include <asm/setup.h> -#include <asm/sections.h> - -pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_data; - -struct page *empty_zero_page; -EXPORT_SYMBOL(empty_zero_page); - -/* - * Cache of MMU context last used. - */ -unsigned long mmu_context_cache = NO_CONTEXT; - -/* - * paging_init() sets up the page tables - * - * This routine also unmaps the page at virtual kernel address 0, so - * that we can trap those pesky NULL-reference errors in the kernel. - */ -void __init paging_init(void) -{ - extern unsigned long _evba; - void *zero_page; - int nid; - - /* - * Make sure we can handle exceptions before enabling - * paging. Not that we should ever _get_ any exceptions this - * early, but you never know... - */ - printk("Exception vectors start at %p\n", &_evba); - sysreg_write(EVBA, (unsigned long)&_evba); - - /* - * Since we are ready to handle exceptions now, we should let - * the CPU generate them... - */ - __asm__ __volatile__ ("csrf %0" : : "i"(SR_EM_BIT)); - - /* - * Allocate the zero page. The allocator will panic if it - * can't satisfy the request, so no need to check. - */ - zero_page = alloc_bootmem_low_pages_node(NODE_DATA(0), - PAGE_SIZE); - - sysreg_write(PTBR, (unsigned long)swapper_pg_dir); - enable_mmu(); - printk ("CPU: Paging enabled\n"); - - for_each_online_node(nid) { - pg_data_t *pgdat = NODE_DATA(nid); - unsigned long zones_size[MAX_NR_ZONES]; - unsigned long low, start_pfn; - - start_pfn = pgdat->bdata->node_min_pfn; - low = pgdat->bdata->node_low_pfn; - - memset(zones_size, 0, sizeof(zones_size)); - zones_size[ZONE_NORMAL] = low - start_pfn; - - printk("Node %u: start_pfn = 0x%lx, low = 0x%lx\n", - nid, start_pfn, low); - - free_area_init_node(nid, zones_size, start_pfn, NULL); - - printk("Node %u: mem_map starts at %p\n", - pgdat->node_id, pgdat->node_mem_map); - } - - mem_map = NODE_DATA(0)->node_mem_map; - - empty_zero_page = virt_to_page(zero_page); - flush_dcache_page(empty_zero_page); -} - -void __init mem_init(void) -{ - pg_data_t *pgdat; - - high_memory = NULL; - for_each_online_pgdat(pgdat) - high_memory = max_t(void *, high_memory, - __va(pgdat_end_pfn(pgdat) << PAGE_SHIFT)); - - set_max_mapnr(MAP_NR(high_memory)); - free_all_bootmem(); - mem_init_print_info(NULL); -} - -void free_initmem(void) -{ - free_initmem_default(-1); -} - -#ifdef CONFIG_BLK_DEV_INITRD -void free_initrd_mem(unsigned long start, unsigned long end) -{ - free_reserved_area((void *)start, (void *)end, -1, "initrd"); -} -#endif |